Claude Code vs Codex
The two strongest vendor coding agents, head to head: Anthropic's Claude Code against OpenAI's Codex. Both live in your terminal and IDE; the real differences are the models behind them and how you pay.
There is no single capability winner across today's agentic-coding boards. Claude Fable 5 holds the best CursorBench 3.1 result we track at 72.9% max effort, while OpenAI's newer GPT-5.6 Sol leads the Artificial Analysis Coding Agent Index in the Codex harness. Claude Code remains a strong choice for hard, multi-step engineering, but the result now depends on the model and harness.
Codex wins on economics for ChatGPT subscribers: it runs on a plan many people already pay for, so the marginal cost of heavy agent use can be near zero, while Claude Code's heaviest use pushes you toward higher subscription tiers or API pricing.
The ecosystems are converging: both support skills, and both have large communities. Most developers we see end up running both and routing by task.
Tokens routed through OpenRouter, captured daily. Vendor agents that use first-party APIs are undercounted here. Full board on the agent leaderboard.
Is Claude Code better than Codex?
It depends on the benchmark and model. Claude Fable 5 posts the strongest CursorBench 3.1 result we track at 72.9% max effort, while GPT-5.6 Sol leads the Artificial Analysis Coding Agent Index in the Codex harness. Codex on an existing ChatGPT subscription can also be effectively free at the margin.
Can I use the same skills with Claude Code and Codex?
Increasingly yes. Skills are markdown-based (a SKILL.md file with instructions), and both agents read the same general format, so many skills are portable. Our skills directory marks which agents each skill is verified to work with.
Which is cheaper, Claude Code or Codex?
For light use, both fit inside their vendors' standard subscriptions. For heavy use, the answer depends on which plan you already pay for: an existing ChatGPT plan makes Codex nearly free at the margin, while an existing Claude plan does the same for Claude Code. On API pricing, Sonnet 5 launches at $2 per million input tokens through August 2026, below GPT-5.4 at $2.50, while both flagships sit higher.